Machine for tacking shoe-shanks.



PATENTED APR; 14, 1908.

B. B. WATERMAN. v MACHINE FOR TAGKING SHOE SHANKS.

- APPLICATION FILED SEPT.26. 1907.

4 SHEETS-SHEET 1.

witnesses:

In: NORRIS PETERS ca, WASHINQYON, n. c

PATENTED APR. 14, 1908.

B. B. WATERMAN MACHINE FOR TAGKING SHOESHANKS.

APPLICATION- I'ILED SEPT. 26, 1907.

4 SHEETS-SHEET 2.

r14: NORRIS PETERS co., 'ASHINGTON, n. c.

No. 884,438. I PATENTED APR. 14, 1908.

B. B. WATERMA-N. MACHINE FOR TAGKING SHOE SHANKS. APPLICATION FILED BEPT.26,1907.

Witnesses fi zventor 1n: NORRIS PETERS co, WASHINGTON, 5. cv

.No. 884,438. PATENTED APR. l4, 1908. B. B. WATERMAN.

MACHINE FOR PACKING SHOE SHANKS.

' APPLICATION FILED SEPT,26.1907.

m Illlll I m 4 SHEETS-SHEET 4.

. g 36 witnesses: frgpgntgr:

UNITED STATES PATENT OFFICE.

BRADFORD B. WATERMAN, OF EAST BRIDGEWATER, MASSACHUSETTS, ASSIGNOR TO THE AMERICAN SHOE FINDING COMPANY, A CORPORATION OF MAINE.

MACHINE FOR TACKING SHOE-SHANKS.

To all whom it may concern:

Be it known that I, BRADFORD B. WATER- MAN, a citizen of the United States, residing at East Bridgewater, in the county of Plymouth and State of Massachusetts, have invented new and useful Improvements in Machines for Tacking Shoe-Shanks, (Case 13,) of which the following is a specification.

This invention relates to improvements in machines for fastening two pieces of material together by means of a tack or tacks or the like, and particularly to machines for tacking metal stiffeners to leatherboard shoe shanks, and the object is to provide means whereby if one of the stiffeners fails to receive one or more tacks which it should receive the operator is prevented from placing a leatherboard shank into operative relation with the driving means.

While the present embodiment can be used in connection with various styles of machines for tacking stiifeners to shoe shanks, I have chosen to illustrate it as applied to a machine substantially like that shown and described in U. S. Letters Patent granted to me February 9, 1907, No. 842,984, to which reference may be had for details of construction and operation, and, therefore, a general description of much of said machine will be suflicient. In the machine of said Letters Patent if one of the steel stiffeners failed to receive a tack or tacks it was automatically ejected by suitable mechanism, while in the present invention said mechanism is omitted and gives place to the means hereinbefore referred to for preventing the introduction of the leatherboard shank.

The invention consists in the combination and arrangement of parts set forth in the following specification and particularly pointed out in the appended claims.

Referring to the drawings, Figure 1 is a longitudinal sectional elevation of a machine embodying my invention. Fig. 2 is an elevation of the same viewed from the right of Fig. 1. Fig. 3 is an enlarged detail elevation viewed from the left of Fig. 1. Fig. 4 is an enlarged detail longitudinal sectional elevation of the left hand end of the machine. Fig. 5 is a detail plan section taken on line 55 of Fig. 4. Fig. 6 is a sectional elevation taken on line 66 of Fig. 4, looking toward the right. Figs. 7, 8 and 9 'are illustrative diagrammatic views showing the guard mechan- Specification of Letters Patent.

Application filed September 26, 1907.

Patented April 14, 1908.

Serial No. 394,687.

ism in different positions, Fig. 7 showing the guard in its normally lowered position, Fi 8 showing the guard in its raised position after the beginning of its dwell, and Fig. 9 showing the guard at the end of its dwell at the moment of the tripping of the lever.

Like numerals refer to like parts throughout the several views of the drawings.

In the drawings, 10 is the frame of the machine consisting of two side members on which is supported a raceway 11 in which a plurality of the stifi'eners 12 are located. A feeding mechanism 13 feeds the stiifeners 12 one by one a portion of their width from the bottom of the pile of stiffeners located in the raceway 11, said stiffeners moving therefrom along a horizontal raceway consisting of two guides 14. A second feeding mechanism 15 comprises a feed-bar 16 on which are mounted feed pawls 17, 18 and 19 which are so ar ranged as to feed a continuous row of the stiifeners beneath raceways 20 and se arate said stiffeners from said row and feet them one by one beneath two anvils 21, 21. One of the leatherboard shanks 22 is shown resting on a vertically reciprocatory driver 23 which is actuated by a driver mechanism 24.

Each of the stiffeners 12 is provided with two perforations 25, 25 in which should be located tacks 26, 26, respectively, said tacks being placed therein by the tack placing means, which, in this instance, consists of the raceways 20. In case one of the stiffeners should fail to receive either of its tacks, it is desirable that the shank 22 shall not be tacked thereto, and to that end a guard 27 is provided and is arranged to be moved into position to prevent the operator of the machine from introducing said shank into operative relation with the driving meansthat is, onto the driver 23.

In the present embodiment of my invention the guard 27 is pivoted at 28 to theframe 10 of the machine and is actuated by the following mechanism: Two slides 29, 29 which are mounted to slide in ways 30, 30 in the guides 14, 14, respectively, are provided with arms 31, 31, respectively to which a link 32 is pivotally connected, said link being forked and having two arms 33, 33 which are individually connected to the arms 31. The link 32 is provided with a slot 34 in Which a block otally connected to the guard 27. A rod 36 fast to the block 35 and arranged to slide in a hole 37 in the link 32 is surrounded by a helical compression spring 38 which bears at one end against said block and at its other end against said link, said spring being adapted to normally retain said block in the left hand end of the slot 34.

The pivot 28 consists of a rod having two pins 39, 39 inserted therein, said pins being adapted to engage pins 40, 40, respectively, the pins 40 being fast to the frame of the machine, whereby the movement of the guard 27 is limited in one direction.

On the slides 29, 29, respectively, are pivotally mounted levers 41, 41, said levers being provided, respectively, with projections 42, 42 which are normally located in the paths of movement of the points of the tacks 26, 26, respectively, each of said levers being provided with a cam surface 43. Each of the slides 29 is normally drawn toward the right by a spring 44 which is connected at one end to a pin 45, which constitutes the pivot of the lever 41, and is connected at its other end to a pin 46 fast to the guide 14. The slides 29 are limited in their movement toward the right by the metal of the guides 14 at the termination of the ways 30, 30.

The feed slide 16 is provided with a downwardly extending T-shaped projection 47 comprising two transverse arms 48, 48 which are adapted to engage the ri ht hand ends of the levers 41, 41, respective y, said ends being located in the paths of movement of said arms, respectively when there are no tacks in contact with the projections 42, 42.

When the slides 29, 29 are moved toward the left, as hereinafter described, the cam surfaces 43, 43, engage wipers 49, 49, respectively, each of which consists of a screw passing through a slot 50 formed in one of the guides 14, there being a nut 51 having screwthreaded engagement with said screw and located in a groove 52, whereby said screws or wipers may be adjusted toward the right or left (Fig. 4) as may be desired.

The general operation of the machine is as follows: As the stiffeners 12 are fed toward the driving means, which consists of the an vils 21 and driver 23, if one of the stiffeners has two tacks located in its perforations, said tacks engage the inclined projections 42, 42 and as t e stiffener is fed along said tacks rock the levers 41 on their ivots 45 and thus the right hand ends of sai levers are moved upwardly out of the paths of movement of the arms or projections 48, respectively, and as the feeding movement continues until said stiffener has arrived in operative relation with the driving means, the guard 27 and its actuating mechanism remains inactive in the position shown in full lines in Fig. 4. The operator is, therefore, permitted to introduce the shank 22 into 0 erative relation with the driving means-t at is, onto the driver 23, and the tacks 26 are driven through said shank. If, however, either of the perforations 25 should fail to receive a tack the lever 41 over which said perforation passes remains in its normal position, as shown in Fig. 7, with its right hand end in the path of movement of the arm or projection 48, and as the feed slide 16 moves toward the left said projection strikes said end of said lever and the slide'29 is thereby moved toward the left in unison with the feed slide 16, thereby acting through the link 32, spring 38 and block 35 to rock the guard 27 into the position shown in Fig. 8. As the pins 39 strike the pins 40, respectively, the rocking movement of the guard 27 is stopped and as the movement of the link 32 continues the spring 38 is compressed during the period of time which is represented by twice the difference between the dotted line position shown in Fig. 8 and the full line position shown in said figure, and thus it will be seen that said guard, as it dwells a considerable length of time in its raised position, prevents the operator from introducing one of the leatherboard shanks 22. The cam surface 43 of the lever 41 engages the wiper 49, as shown in Fig. 8, and as the movement of the slide 29 toward the left continues the lever 41 is tripped or in other words is rocked on its ivot 45 until its right hand end passes entirely out of engagement with the projection or arm 48, as shown in Fig. 9, and there upon the spring 44 acts to return the slide 29 and parts connected thereto to the normal position shown in Fig. 4. If it were not for the tripping of the levers 41 as just described the movement of the feed bar 16 toward the left would carry the left hand ends of said levers between the anvils 21 and the drivers 23 with the result that said drivers in approaching said anvils would be apt to cause the shoe shank 22 to strike said levers. derstood that by reason of the fact that both of the slides 29 are connected to the one link 32, if one of the levers 41 is engaged and carried forward the other lever will necessarily be carried forward at the same time and will be returned simultaneously therewith.

It will be evident that the guard mechanism may be embodied in various forms and may be applied to machines other than the machinein connection with which I have illustrated it and I do not limit myself to the specific embodiment herein shown.

Having thus described my invention what I claim and desire by Letters Patent to secure is:

1. In a machine for fastening two ieces of material together by means of a tac or the like, means for introducing a tack into one piece, means for driving said tack into a second piece, and means to prevent the introduction of said second piece into operative relation with said driving means, said last It will be unnamed means being adapted to be actuated by said tack to permit the introduction of said second piece.

2. In a machine for fastening two pieces of material together by means of tacks or the like, means for introducing two tacks into one piece, means for driving said tacks into a second piece, and means to prevent the in troduction of said second piece into operative relation with said driving means, said last named means being adapted to be actuated by both of said tacks to permit the introduction of said second piece.

3. In a machine for fastening two ieces of material together by means of a tac or the like, means for introducing a tack into one piece, means for driving said tack into a second piece, means for feeding said first piece from said tack introducing means toward said driving means, and means to prevent the introduction of said second piece into operative relation with said driving means, said last named means being ada ted to be actuated by said tack during sai feeding movement to permit the introduction of said sec ond piece.

4. In a machine for fastening two pieces of material together by means of tacks or the like, means for introducing two tacks into one piece, means for driving said tacks into a second piece, means for feeding said first piece from said tack introducing means toward said driving means, and means to prevent the introduction of said second piece into operative relation with said driving means, said last named means being adapted to be actuated by both of said tacks during said feeding movement to permit the introduction of said second piece.

5. In a machine for fastening two pieces of material together by means of a tack or thelike, means for introducing a tack into one piece, means for driving said tack into a second piece, a raceway, means for feeding said first piece from said tack introducing means along said raceway toward said driving means, and means to prevent the introduction of said second piece into operative relation with said driving means, said last named means being adapted to be actuated by said tack during said feeding to permit the introduction of said second piece.

6. In a machine for fastening two pieces of material together by means of tacks or the like, means for introducing two tacks into one piece, means for driving said tacks into a second piece, a raceway, means lfor feeding said first piece from said tack introducing means along said raceway to said tack driving means, and means to prevent the introduction of said second piece into operative relation with said driving means, said last named means being adapted to be actuated by both of said tacks to premit the introduction of said second piece.

7. In a machine for fastening two ieces of material together by means of a tac or the like, means for introducing a tack into one piece, an anvil, a driver movable toward and away from said anvil, means for feeding said piece between said anvil and said driver, and means to prevent the introduction of a second iece between said anvil and said driver, said ast named means being adapted'to be actuated by said tack to permit the. introduction of said second piece.

8. In a machine for fastening two pieces of material together by means of tacks or the like, means for introducing two tacks into one piece, an anvil, a driver movable toward and away from said anvil, means for feeding said piece between said anvil and said driver, and means to prevent the introduction of a second piece between said anvil and said driver, said last named means being adapted to be actuated by both of said tacks to permit the introduction of said second piece.

9. In a machine for fastening two pieces of material together by means of a tack or the like, means for introducing a tack into one piece, means for driving said tack into a second piece, a guard adapted to be moved into position to prevent the introduction of said second piece into operative relation with said driving means, means for feeding said first piece from said tack introducing means toward said driving means, a movable member normally located in the path of movement of said tack, and mechanism operatively connecting said member to said guard, whereby when said first piece fails to receive a tack, said guard is moved into position to prevent the introduction of said second piece.

10. In a machine for fastening two pieces of material together by means of tacks or the like, means for introducing two tacks into one piece, means for driving said tacks into a second piece, a guard adapted to be moved into position to prevent the introduction of said second piece into operative relation with said driving means, means for feeding said first piece from said tack introducing means to said driving means, two movable members normally located in the 'paths of movement of said tacks, respectively, and. mechanism operatively connecting said members to said guard whereby when said first piece fails to receive two tacks said guard is moved into position to prevent the introduction of said second piece.

11. In a machine for fastening two pieces of material together by means of a tack or the like, means for introducing a tack into one piece, means for driving said tack into a second piece, a guard arranged to be moved into position to prevent the introduction of said second piece into operative relation with said driving means, means for feeding said first piece from said tack introducing means toward said driving means, a lever one end of which is normally located in the path of .of movement of a portion of said feeding means, and mechanism operatively connecting said lever to said guard, whereby when said first piece fails to receive a tack said guard is moved into position to prevent the introduction of said second piece.

12. In a machine for fastening two pieces of material together by means of tacks or the like, means for introducing two tacks into one piece, means for driving said tacks into a second piece, a guard arranged to be moved into position to prevent the introduction of said second piece into operative relation with said driving means, a lever one end of which is normallylocated in the path of movement of one of said tacks, a second lever one end of which is normally located in the path of movement of theother of said tacks, the other pair of ends of said levers being normally located in the path of movement of a portion of said feeding means, and mechanism operatively connecting said levers to said guard, whereby when said first piece fails to receive two tacks said guard is moved into position to prevent the introduction of said second piece.

13. In a machine for fastening two pieces of material together by means of a tack or the like, means for introducing a tack into one piece, means for driving said tack into a second piece, a guard arranged to be moved into position to prevent the introduction of said second piece into operative relation with said driving means, a feeding device adapted to feed saidfirst piece from said tack introducing means toward said driving means, a member movable toward and away from said driving means, a lever pivoted on said member, one end of said lever normally lying in the path of movement of said tack,- the other end of said lever normally lying in the path of movement of said feeding device, and means operatively connecting said member to said guard, whereby when said first piece fails to receive a tack said guard is moved into position to prevent the introduction of said second piece.

14. In a machine for fastening two pieces of material together by means of tacks or the like, means for introducing two tacks into one piece, means for driving said tacks into a second piece, a guard arranged to be moved into position to prevent the introduction of said second piece into operative relation with said driving means, a feeding device adapted to feed said first piece from said tack introducing means toward said driving means, a member movable toward and away from said driving means, a lever pivoted on said member, one end of said lever normally lying in the path of one of said tacks, a second member movable toward and away from said driving means, a second lever piv oted on said second member, one end of said second lever normally lying in the path of the other of said tacks, the other pair of ends of said lever normally lying in the path of movement of said feeding device, and means operatively connecting said members to said guard, whereby when said first piece fails to receive two tacks said guard is moved into position'to prevent the introduction of said second piece.

15. In a machine for fastening two pieces of material together by means of a tack or the like, means for introducing a tack into one piece, means for driving said tack into a second piece, a guard arranged to bemoved into position to prevent the introduction of said second piece into operative relation with said driving means, a feeding device'adapted to feed said first piece from said tack introducing means toward said driving means, a member movable toward and away from said driving means, a lever pivoted on said member, one end of said lever normally lying in the path of movement of said tack, the other end of said lever normally lying in the path of movement of said feeding device, and means operatively connecting said memher to said guard whereby when said first piece fails to receive a tack, said guard is moved into position to prevent the introduction of said second piece, said last named means comprising a spring arranged to permit said guard to dwell for a period of time in said position.

16. In a machine for fastening two pieces of material together by means of tacks or the like, means for introducing two tacks into one piece, means for driving said tacks into a second piece, a guard arranged to be moved into position to prevent the introduction of said second piece into operative relation with said driving means, a feeding device adapted to feed said first piece from said tack introducing means toward said driving means, a

member movable toward and away from said driving means, a lever pivoted on said member, one end of said lever normally lying in the path of one of said tacks, a second member movable toward and away from said driving means, a second lever pivoted on said second member, one end of said second lever normally lying in the path of the other of said tacks, the other pair of ends of said levers normally lying in the path of movement of said feeding device, and means operatively connecting said members to said guard whereby when said first piece fails to receive two tacks said guard is moved into position to prevent the introduction of said secondpiece, said last named means comprising a spring arranged to permit said guard to dwell for a period of time in said position.

17. In a machine for fastening two pieces of material together by means of a tack or the like, means for introducing a tack into one piece, means for driving said tack into a second piece, a pivoted guard arranged to be moved into position to prevent the introduction of said second piece into operative relation with said driving means, a feeding device adapted to feed said first piece from said tack introducing means toward said driving means, a member movable toward and away from said driving means, a lever pivoted on said member, one end of said lever normally lying in the path of movement of said tack, the other end of said lever normally lying in the path of movement of said feeding device, and a link connecting said guard to said member, whereby when said first piece fails to receive a tack said guard is moved into position to prevent the introduction of said second piece.

18. In a machine for fastening two pieces of material together by means of tacks or the like, means for introducing two tacks into one piece, means for driving said tacks into a second piece, a pivoted guard arranged to be moved into position to prevent the introduction of said second piece into operative relation with said driving means, a feeding device adapted to feed said first piece from said track introducing means toward said driving means, two members adapted to be moved toward and away from said driving means, two levers pivoted on said members, respectively, two ends of said levers normally located in the paths of movement of said tacks, respectively, the other pair of ends of said levers being normally located in the path of movement of said feeding device, and a link connecting said guard to said members, whereby when said first piece fails to receive two tacks said guard is moved into position to prevent the introduction of said second iece.

19. n a machine for fastening two pieces of material together by means of a tack or the like, means for introducing a tack into one piece, means for driving said tack into a second piece, a pivoted guard arranged to be moved into position to prevent the introduction of said second piece into operative relation with said driving means, a feeding device adapted to feed said first piece from said tack introducing means toward said driving means, a member movable toward and away from said driving means, a lever pivoted on said member, one end of said lever normally located in the path of movement of said tack, the other end of said lever normally located in the path of movement of said feeding device, a link connected to said member, said link being provided with a slot extending longitudinally thereof, a block ar ranged to slide in said slot, said block being connected to said guard, and a spring adapted to normally hold said block at one end of said slot whereby when said first piece fails to receive a tack said guard is moved into position to prevent the introduction of said second piece and to dwell a period of time in said position.

20. In a machine for fastening two pieces of material together by means of tacks or the like, means for introducing two tacks into one piece, means for driving said tacks into a second piece, a pivoted guard arranged to be moved into position to prevent the introduction of said second piece into operative relation with said driving means, a feeding device adapted to feed said first piece from said tack introducing means toward said driving means, two members movable toward and away from said driving means, two levers pivoted on said members res ectively, two ends of said levers normally coated in the aths of movement of said tacks, respective y, the other ends of said levers normally located in the path of movement of said feeding device, a link connected to said members, said link being rovided with a slot extending longitudina y thereof, a block arranged to slide in said slot, said block being connected to said guard, and a spring adapted to normally hold said block at one end of said slot, whereby when said first piece fails to receive two tacks said guard is moved into position to prevent the introduction of said second piece and to dwell a period of time in said position.

21. In a machine for fastening two pieces of material together by means of a tack or the like, means for introducing a tack into one piece, means for driving said tack into a second piece, a guard arranged to be moved into position to prevent the introduction of said second piece into 0 erative relation with said driving means, a evice for feeding said first piece from said tack introducing means toward said driving means, a member mov able toward and away from said driving means, a lever pivoted on said member, one end of said lever being normally located in the path of movement of said tack, the other end of said lever being normally located in the path of movement of said feeding device, mechanism operatively connecting said member to said guard, whereby when said first piece fails to receive a tack said feeding device engages said lever and moves said guard into position to prevent the introduction of said second piece, and means to disengage said lever from said feeding device during its feedin movement.

22. In a machine for fastening two pieces of material together by means of tacks or the like, means for introducing two tacks into one piece, means for driving said tacks into a second piece, a guard arranged to be moved into position to prevent the introduction of said second piece into 0 erative relation with said driving means, a c evice for. feeding said first piece from said tack introducing means toward said drivin means, two members movable toward and away from said driving means, two levers pivoted on said members, res ectively, two ends of said levers norma ly located in the aths of movement of said tacks, respective y, the other ends of said levers being normally located in the path of movement of said feeding device, mechanism operatively connecting said members to said guard, whereby when said first piece fails to receive two tacks said feeding device engages said levers and moves said guard into position to prevent the introduction of said second iece, and means to disengage said levers from said feeding device during its feeding movement.

23. In a machine for fastening two pieces of material together by means of a tack or the like, means for introducing a tack into one piece, means for driving said tack into a second piece, a guard arranged to be moved into position to prevent the introduction of said second piece into operative relation with said drivin means, a device for feeding said first piece from said tack introducing means toward said driving means, a member movable toward and away from said driving means, a lever pivoted on said member, one end of said lever being normally located in the path of movement of said tack, the other end of said lever being normally located in the path of movement of said feeding device, mechanism 0 eratively connecting said lever to said guard? whereby when said first piece fails to receive a tack said feeding device engages said lever and moves said guard into position to prevent the introduction of said second piece, and means to d sengage said lever from said feeding device during its feeding movement, said last named means being adjustable toward and away from said driving means.

24. In a machine for fastening two pieces of material together by means of tacks or the like, means for introducing two tacks into one piece, means for driving said tacks into a second piece, a guard arranged to be moved into position to prevent the introduction of said second piece into operative relation with said driving means, a device for feeding said first piece from said tack introducing means toward said drivin means, two members movable toward and away from said driving means, two levers pivoted on said members, respectively, two ends of said levers normally located in the paths of movement of said tacks, respectively, the other ends of said levers being normally located in the path of movement of said feeding device, mechanism operatively connecting said members to said guard, whereby whensaid first piece fails to receive two tacks said feeding device engages said levers and moves said guard into osition to prevent the introduction of sair second iece, and means to disengage said levers from said feeding deviceduring its feeding movement, said last named means being adjustable toward and away from said driving means.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

BRADFORD B. WATERMAN Witnesses:

CHARLES S. GOODING, ANNIE J. DAILEY. 

